Hub Caps??

[barryware]

Don't flame me but I am looking for:

The doo-dads that cover just the center hole in the stock steel wheels.

The stock wheel covers suck and my Yaris has chrome lug nuts so I want to trash the wheel covers and just use the steel wheels. I want the doo-dad that covers just the center hole.

In a previous life, I had a car like that. It was just a plastic piece that clipped into the center hole.

Can't find anything when searching the net. Everything I search for, all I find are wheel covers and if I do find center caps or covers, they are usually what you would find on a pick up truck that used trim rings and the center cap also covers the lug nuts.

You guys know what I am talking about? Know anywhere to get'em?